Madison (S.D.) Regional Health System. Madison Regional Health System, formerly known as Madison Community Hospital, operates a 22-bed nonprofit, independent healthcare facility that has served Madison and its surrounding communities for more than a century. The hospital was named among the Top 100 Critical Access Hospitals in the nation for the past three consecutive years, according to iVantage Health Analytics. It won the 2015 Growth and Achievement Award from the Lake Area Improvement Corporation for its positive economic impact on the community.